The Nazca Lines are an exceptional collection of geoglyphs in the southern desert of Peru. There are about 300 figures among them including geometric shapes, animal like figures, straight continuous lines, humans and plants. The exceptionality of these geoglyphs rest in the fact that they can only be seen from the air.

Inca architecture is most known for its polygonal stones used in many religious buildings. One stone found in a temple wall in Machu Picchu is estimated to have at least 33 corners. Machu Picchu has about 200 buildings that are considered architectural wonders. These buildings were made of individually shaped pieces of carved gray granite stone that fitted perfectly together.

Animals of the Amazon Rainforest

The Amazon Rainforest is home to more than 1,000 species of frogs. The Poison-dart frog is by far the most poisonous frog on earth.
The Amazon Rainforest is also home to more than 10,000 species of mammals, 1,500 species of birds and the Amazon River and its tributaries have more than 3,000 species of fish.